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Characterization of Polystyrene‐ block ‐Polyethylene Oxide Diblock Copolymers and Blends of Homopolymers by Liquid Chromatography at Critical Conditions (LCCC)
Author(s) -
Sinha Pritish,
Grabowsky Monika,
Malik Muhammad Imran,
Harding Gareth William,
Pasch Harald
Publication year - 2012
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201250318
Subject(s) - copolymer , polystyrene , materials science , size exclusion chromatography , polymer chemistry , anionic addition polymerization , polymerization , block (permutation group theory) , gel permeation chromatography , polyethylene , oxide , chemical engineering , chemistry , polymer , organic chemistry , composite material , geometry , mathematics , engineering , enzyme , metallurgy
In the present study, diblock copolymers of PS‐ b ‐PEO synthesized by sequential living anionic polymerization as well as the blends of PS, PEO homopolymers will be investigated by using liquid chromatography at critical conditions. Critical conditions will be established for the PS block of the copolymer. At these conditions, the PS block is chromatographically invisible and does not contribute to retention so the block copolymer is separated according to the block length of the PEO block. At the critical conditions of PS, it is also possible to separate the PS homopolymer formed. The critical conditions will be established in such a way that the non‐critical PEO block elutes in size exclusion chromatography (SEC) mode.